Computer Science
Scientific paper
Mar 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980p%26ss...28..213w&link_type=abstract
Planetary and Space Science, vol. 28, Mar. 1980, p. 213-223. Research supported by the Alexander von Humboldt-Stiftung and Sout
Computer Science
12
Atmospheric Models, Earth Magnetosphere, Geomagnetic Pulsations, Ionospheric Conductivity, Plasma Resonance, Accuracy, Dipoles, Electric Fields, Geomagnetic Latitude, Magnetic Fields, Magnetohydrodynamics
Scientific paper
Magnetohydrodynamic resonance theory is used to model the structure of the magnetospheric and ionospheric electric and magnetic fields associated with Pc5 geomagnetic pulsations. In this paper the variation of the fields across the invariant latitude of the resonance are computed. The results are combined with calculations of the variation along a field line to map the fields down to the ionosphere. In one case the results are compared with measurements obtained by the STARE auroral radar and show good agreement. The relationship between the width of the resonance region and ionospheric height-integrated Pedersen conductivity is computed and it is shown how auroral radar measurements of Pc5 oscillations could be used to determine ionospheric height-integrated Pedersen conductivity. It is pointed out that from these calculations it would be possible to identify the field line on which a satellite was located by comparing a Pc5 pulsation observed by the satellite, and the same pulsation observed by STARE.
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